| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently secure a space in a region above a weld seam covered by a work coil when an electric-resistance weld pipe is manufactured by a work coil method.SOLUTION: Paths of feeding plates 131a, 131b, which connect a coil part 120 (a work coil) with a power source 110, are formed at positions which are located above a weld seam L and detour a region above the coil part 120 (the work coil). |
